[quote="megosu"]I don't want to reset the permissions,
I only want to copy one directory and to keep the ACL on this directory and on the files within.[/quote]
You seem to contradict yourself.
If target file is supposed to inherit properties of target directory, that means that permissions copying should be off (because the file is supposed to get target's permissions, not its own).
If you want to copy permissions, permissions have to be applied to the file when copying- how would you imagine copying permissions other way?
I think you'd like a very specific mix of the above- but regarding only inheritance settings. Still we have Owner and Auditing into the mix...
X.